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    Method and apparatus for media scene description
    1.
    发明授权
    Method and apparatus for media scene description 有权

    公开(公告)号：US12231721B2

    公开(公告)日：2025-02-18

    申请号：US18467305

    申请日：2023-09-14

    Applicant: TENCENT AMERICA LLC

    Inventor： Shuai Zhao ,  Stephan Wenger ,  Iraj Sodagar ,  Shan Liu

    IPC: G06T15/20 ,  H04N21/218 ,  H04N21/44 ,  H04N21/81

    Abstract: Systems, methods, and devices for managing media storage and delivery, including obtaining information about a three-dimensional (3D) scene; obtaining, from the information, a parameter indicating that viewport adaptation is enabled; rendering the 3D scene, wherein the 3D scene includes at least one two-dimensional (2D) video to be reproduced within the 3D scene; obtaining a current viewport of a user; determining whether the at least one 2D video is inside of a range of the current viewport; and adjusting a bitrate of the at least one 2D video based on a result of the determining.

    Method for access unit delimiter signaling
    3.
    发明授权
    Method for access unit delimiter signaling 有权

    公开(公告)号：US12219177B2

    公开(公告)日：2025-02-04

    申请号：US18368848

    申请日：2023-09-15

    Applicant: TENCENT AMERICA LLC

    Inventor： Byeongdoo Choi ,  Stephan Wenger ,  Shan Liu

    IPC: H04N19/70 ,  H04N19/105 ,  H04N19/159 ,  H04N19/169 ,  H04N19/174

    Abstract: There is included a method and apparatus comprising computer code configured to cause a processor or processors to perform obtaining video data, determining an access unit delimiter syntax of at least one network abstraction layer (NAL) unit of the video data, determining whether the access unit delimiter syntax indicates a slice type value of the NAL unit, determining whether the access unit delimiter syntax of the NAL unit indicates at least one of a video coding layer (VCL) value and an access unit order count value of the NAL unit, and signaling access unit boundary values of the NAL unit according to whether the access unit delimiter syntax indicates at least one of the slice type value, the VCL value, and the access unit order count value.

    Method for signaling picture header in coded video stream
    4.
    发明授权
    Method for signaling picture header in coded video stream 有权

    公开(公告)号：US12219162B2

    公开(公告)日：2025-02-04

    申请号：US18196073

    申请日：2023-05-11

    Applicant: TENCENT AMERICA LLC

    Inventor： Byeongdoo Choi ,  Shan Liu ,  Stephan Wenger

    IPC: H04N7/12 ,  H04N19/169 ,  H04N19/172 ,  H04N19/44 ,  H04N19/46

    Abstract: A method of decoding an encoded video bitstream using at least one processor includes obtaining a video coding layer (VCL) network abstraction layer (NAL) unit; determining whether the VCL NAL unit is a first VCL NAL unit of a picture unit (PU) containing the VCL NAL unit; based on determining that the VCL NAL unit is the first VCL NAL unit of the PU, determining whether the VCL NAL unit is a first VCL NAL unit of an access unit (AU) containing the PU; and based on determining that the VCL NAL unit is the first VCL NAL unit of the AU, decoding the AU based on the VCL NAL unit.

    IMMERSIVE MEDIA STREAMING PRIORITIZED BY FREQUENCY OF ASSET REUSE
    7.
    发明公开
    IMMERSIVE MEDIA STREAMING PRIORITIZED BY FREQUENCY OF ASSET REUSE 审中-公开

    公开(公告)号：US20240275835A1

    公开(公告)日：2024-08-15

    申请号：US18443855

    申请日：2024-02-16

    Applicant: TENCENT AMERICA LLC

    Inventor： Arianne HINDS ,  Rohit Abhishek ,  Stephan Wenger

    IPC: H04L65/61 ,  H04L65/611

    CPC classification number: H04L65/61 ,  H04L65/611

    Abstract: Packaging media for optimizing immersive media distribution of a media steam performed by at least one processor, is provided, including: receiving immersive media data for an immersive presentation; acquiring asset information associated with media assets corresponding to a set of scenes included in the immersive media data for the immersive presentation; analysing characteristics of the media assets based on the asset information, the characteristics comprising an asset type associated with a respective media asset and a frequency that indicates a number of times the respective media asset is used among the set of scenes included in the immersive presentation; ordering the media assets in a sequence based on the asset type and the frequency associated with each of the media assets; and streaming the immersive media data for the immersive presentation based on the ordered sequence of the media assets.

    DERIVATION ON SUBLAYER-WISE OUTPUT LAYER SET
    8.
    发明公开
    DERIVATION ON SUBLAYER-WISE OUTPUT LAYER SET 审中-公开

    公开(公告)号：US20240187621A1

    公开(公告)日：2024-06-06

    申请号：US18404209

    申请日：2024-01-04

    Applicant: TENCENT AMERICA LLC

    Inventor： Byeongdoo CHOI ,  Shan Liu ,  Stephan Wenger

    IPC: H04N19/44 ,  H04N19/503

    CPC classification number: H04N19/44 ,  H04N19/503

    Abstract: A method and system for decoding a coded video sequence may include obtaining the coded video sequence, and decoding the coded video sequence. A a value of a temporal sublayer identifier of a video coding layer (VCL) network abstraction layer (NAL) unit in the coded video sequence is constrained to be less than or equal to a value of vps_max_sublayers_minus1, that specifies a maximum number of temporal sublayers that may be present in a layer in each coded video sequence referring to the video parameter set (VPS), in the VPS referred to by the VCL NAL unit.

    Techniques for constraint flag signaling for range extension with persistent rice adaptation
    9.
    发明授权
    Techniques for constraint flag signaling for range extension with persistent rice adaptation 有权

    公开(公告)号：US11997317B2

    公开(公告)日：2024-05-28

    申请号：US17710786

    申请日：2022-03-31

    Applicant: Tencent America LLC

    Inventor： Byeongdoo Choi ,  Shan Liu ,  Stephan Wenger

    IPC: H04N19/70 ,  H04N19/149 ,  H04N19/172 ,  H04N19/18

    CPC classification number: H04N19/70 ,  H04N19/149 ,  H04N19/172 ,  H04N19/18

    Abstract: Aspects of the disclosure provide methods and apparatuses for video data processing. In some examples, an apparatus for video data processing includes processing circuitry. For example, the processing circuitry determines a first syntax element for coding control in a first scope of coded video data in a bitstream. The first syntax element is associated with a coding tool of persistent Rice adaptation defined in a range extension of a video standard for a statistics based Rice parameter derivation in a residual coding. In response to the first syntax element being a first value indicative of disabling of the coding tool in the first scope, the processing circuitry decodes the first scope of coded video data that includes one or more second scopes of coded video data without invoking the coding tool.

    Immersive media data complexity analyzer for transformation of asset formats
    10.
    发明授权
    Immersive media data complexity analyzer for transformation of asset formats 有权

    公开(公告)号：US11991424B2

    公开(公告)日：2024-05-21

    申请号：US17969226

    申请日：2022-10-19

    Applicant: TENCENT AMERICA LLC

    Inventor： Arianne Hinds ,  Rohit Abhishek ,  Stephan Wenger

    IPC: H04N21/84 ,  H04N21/854

    CPC classification number: H04N21/84 ,  H04N21/85406

    Abstract: Analyzing the complexity of an object of a scene in a media steam (or media data) performed by at least one processor, is provided, including receiving immersive media data comprising a plurality of scenes from a content source; obtaining a respective object of a respective scene in the plurality of scenes, from the immersive media data; analyzing the respective scene to generate complexity information associated with the respective object of the respective scene; generating metadata associated with the respective object of the respective scene, the metadata comprising the complexity information; and determining whether to distribute the respective scene to a client for processing based on the generated metadata.

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